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Model specific boards => Golf mk4 => Topic started by: MaXXeH on 09 February 2014, 06:55

Title: Alternator charge fluctuating
Post by: MaXXeH on 09 February 2014, 06:55

I have a problem with a AGU not charging correctly and the battery keeps going flat.

using a multimeter with the car running the V goes to 11.9v - 14v  11.9v back and forth.  You can hear the change in the engine note.

any ideas?  not sure it is a short or alternator is dead.

 

Title: Re: Alternator charge fluctuating
Post by: sharki786 on 09 February 2014, 07:25

Sounds like the alternator has had it. Other way of checking it would be start the car and disconnect the battery while engine is running. I know with older cars you can do that but not sure with a mk4.

Title: Re: Alternator charge fluctuating
Post by: Wazzzer on 09 February 2014, 18:23

Funnily enough I have a 120amp alternator for sale lol

Title: Re: Alternator charge fluctuating
Post by: itavaltalainen on 09 February 2014, 20:09

or just replace the shot voltage regulator on it for 10£